pin postgres to version 13

README.md

@@ -24,13 +24,15 @@ Our convention 4 kubernetes c4k-* tools combine the advantages of both approache
 
 ## Refactoring & Module Overview
 
-| Module           | Version | common postgres | frontend script | provider adapter | [backup as deployment](https://gitlab.com/domaindrivenarchitecture/c4k-jira/-/merge_requests/1) |
+| Module           | Version | common postgres | frontend script | provider adapter | [backup as deployment][bak1] |
 |------------------|---------|:---------------:|:---------------:|:----------------:|:----------------:|
 | c4k-mastodon-bot | 0.1     |       -         |                 |                  |                  |
 | c4k-keycloak     | 0.2     |                 |                 |                  |                  |
 | c4k-jira         | 1.0     |       x         |       x         |                  |        x         |
 | c4k-nextcloud    | 0.1     |                 |                 |                  |                  |
 
+[bak1]: https://gitlab.com/domaindrivenarchitecture/c4k-jira/-/merge_requests/1
+
 ## License
 
 Copyright © 2021 meissa GmbH

doc/Postgres.md

@@ -0,0 +1,5 @@
+# Postgres Resources
+* https://www.enterprisedb.com/postgres-tutorials/how-tune-postgresql-memory
+* https://blog.crunchydata.com/blog/postgresql-14-on-kubernetes
+* https://github.com/CrunchyData/postgres-operator
+* https://www.postgresql.org/about/news/kubegres-is-available-as-open-source-2197/

src/main/resources/postgres/deployment.yaml

@@ -14,7 +14,7 @@ spec:
         app: postgresql
     spec:
       containers:
-        - image: postgres
+        - image: postgres:13
           name: postgresql
           env:
             - name: POSTGRES_USER